Protect PDF
Process your PDF files online quickly and securely.
Drag & drop your PDF here
or click to select file
How to use Protect PDF
- Upload or drag & drop your file into the box above.
- Click the “Protect PDF” button and let the tool do the work.
- Download your result — files are processed securely and removed automatically.
About Protect PDF
Process your PDF files online quickly and securely.
Features
- 100% free — no watermarks and no sign-up required.
- Secure processing over HTTPS; uploaded files are auto-deleted.
- Works in any modern browser on desktop, tablet and mobile.
Frequently asked questions
Is this tool free to use?
Yes. It is completely free with no sign-up and no watermarks.
Are my files safe?
Files are transferred securely and deleted automatically after processing.
User Guide
- Upload the PDF you want to lock.
- Enter a strong password that will be required to open the file.
- Apply the encryption — the tool secures the document without changing its contents.
- Download your password-protected PDF and share it safely.
About the Protect PDF Tool
Add password protection to a PDF so only people with the password can open it. The tool applies real encryption, keeping sensitive documents private if they’re intercepted, forwarded or left on a shared device.
Essential for anyone sending contracts, financial records, ID documents or confidential reports by email or cloud storage.
Frequently Asked Questions
How do I password-protect a PDF?
Upload the PDF, set a password, and download the protected file. Anyone opening it will then need that password.
Is the Protect PDF tool free?
Yes, it is free to use with no sign-up and no watermark.
What kind of protection does it apply?
It applies real password encryption, so the document cannot be opened without the correct password.
Can the password be removed later?
Yes — if you know the password, you can remove it any time using our Unlock PDF tool.
Will protecting the PDF change its contents?
No. The layout, text and images stay exactly the same; only an open-password is added.